Sensus 461-S Installation And Maintenance Instructions Manual Download Page 8

28

27

a
b

c
d

e

f

11

Inlet

1b

3a

4a

2b

5a

7c

7b

9

21

22
23

d

c

b

a

20

h

g

24

d

n

12

a

b

m

e

c

30

16

2

1

3

9

45

22

23

a

b

c

e

h

c

d

i

13

14

15

16

18

19

20

15

12

a

b

d

f

h

11

d

g

f

17

c

a

b

d

f

g

11

3a

4

7a

7b

9

21

22

23

17

12a

15 24

h

2

5

45

2

2a

e

c

461-8S Aluminum 
Diaphragm Case

17

33

32

461-S Cast Iron 
Diaphragm Case

Capacities at Other Pressures

Capacity for pressure reductions not listed
in the table can be calculated with the
following formula:

1

Q = K      P

0

(P- P

0

)

2

Q = KP

1

2

Q = maximum capacity of the regulator 

(in SCFH of 0.6 specific gravity 
natural gas)

K = the 

“K” factor;

the regulator constant 

(from Sensus bulletin R-1330, page 6)

P

1

=

absolute

inlet pressure (psia)

P

2

=

absolute

outlet pressure (psia)

Use formula 1 when P

1

is less than 1.894

P

0

Use formula 2 when P

1

is greater than 1.894

P

0

461-12S 
Aluminum Diaphragm Case

Single Seat Balanced 
Valve Assembly

Screwed Side 
Inspection Plates

Models 461-S, 461-8S and 461-12S Regulators   

Installation and Maintenance Instructions

Limited Warranty

Seller warrants the Goods to be free from defects in materials manufactured by Seller and in Seller’s workmanship for a period of one (1) year after tender of delivery (the “Warranty Period").  THIS LIMITED WARRANTY

(a) IS IN LIEU OF, AND SELLER DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES, STATUTORY, EXPRESS OR IMPLIED, INCLUDING, WITH LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE, OR OF CONFORMITY TO MODELS OR SAMPLES; (b) does not apply to any Goods which have been (I) repaired, altered or improperly installed; (ii) subjected to improper use or storage,

(iii) used or incorporated with other materials or equipment, after buyer or anyone using the Goods has, or reasonably should have, knowledge of any defect or nonconformance of the Goods; or (iv) manufactured, 

fabricated or assembled by anyone other than Seller, (c) shall not be effective unless buyer notifies Seller in writing of any purported defect or nonconformance with (thirty days) after Buyer discovers or should have 

reasonably discovered such purported defect or nonconformance; and (d) shall only extend to Buyer and not to any subsequent buyers or users of the Goods. Buyer shall provide Seller access to the Goods as to which

Buyer claims a purported defect or nonconformance, upon request by Seller, buyer shall, at its own risk and expense, promptly return the Goods in question to Seller’s Plant.

© Sensus  2009

Made in USA

12/09

8

05 Liberty Boulevard

DuBois, PA  15801
800-375-8875
Fax: (814) 375-8460

www.sensus.com/gas

Authorized
Distributor:

Outlet Pressure Range

Spring Color

Spring Part No.

3-1/2" to 6-1/2" w.c.

Red

143-16-021-03

5" to 8-1/2" wc.

Blue

143-16-021-04

6" to 14" wc.

Green

143-16-021-05

12" to 28" wc.

Orange

143-16-021-06

1 psi to 2 psi

Black

143-16-021-07

1-1/2 psi to 3 psi

Cadmium

143-16-021-08

Model 461-12S

Diaphragm

Outlet Pressure

Spring

Spring

Size

Ratings

Color

Part No.

8-1/2"

3 to 6 psi

Blue

090-70-021-04

5 to 10 psi

Red

090-70-021-05

2 to 10" w.c.

Aluminum

090-70-021-00

4 to 16" w.c.

Green

090-70-021-01

12"

7 to 29" w.c.

Yellow

090-70-021-02

1.5 to 1.75 psi.

Gray

090-70-021-03

1 to 3.5 psi.

Blue

090-70-021-04

Model 461-S

Outlet Pressure Range

Spring Color

Spring Part No.

1 psi to 2 psi

Orange

143-16-021-06

2 psi to 4-1/4 psi

Black

143-16-021-07

3 psi to 6-1/2 psi

Cadmium

143-16-021-08

6 psi to 10 psi

Cadmium (outer)

143-16-021-08

White (inner)

143-16-021-13

Model 461-8S

All products purchased and services performed are subject to Sensus' terms of sale, available at either; http://na.sensus.com/TC/TermsConditions.pdf or 1-800-METER-IT. Sensus reserves the right to 

modify these terms and conditions in its own discretion without notice to the customer. 

This document is for informational purposes only, and SENSUS MAKES NO EXPRESS WARRANTIES IN THIS DOCUMENT. FURTHERMORE, THERE ARE NO IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, 
WARRANTIES AS TO FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. ANY USE OF THE PRODUCTS THAT IS NOT SPECIFICALLY PERMITTED HEREIN IS PROHIBITED.

Summary of Contents for 461-S

Page 1: ...Models 461 S 461 8S and 461 12S Regulators Regulators RM 1330 R7 Installation and Maintenance Instructions RM 1330 R8 ...

Page 2: ... If this cannot be done a filter or strainer should be installed ahead of the regulator see bulletin RDS 1498 Regulator Pressure Ratings Make certain that inside of the regulator and piping are free of dirt foreign matter and other debris 2 Install the regulator Make certain flow through the regulator is in the correct direction High pressure connects to the inlet side Be sure that shipping screen...

Page 3: ...ng through the regulator Remove the seal cap and if applicable loosen locknut to make adjustment After adjustment is complete locknut if applicable should be tightened firmly and seal cap replaced The absence of this seal cap can result in unstable operation 9 To shut down carefully close valves C B and A in that order CAUTION 1 Keep pipe dope and all other foreign substances out of the control li...

Page 4: ...o return adjustment to setting during reassembly On 461 12S remove adjustment 3 and spring 9 On 461 8S release adjustment 3a and remove cover 5 button 7a and spring 9 On 461 S release adjustment 3a and remove cover 8 button 7b and spring 9 2 Remove bottom inspection plate 14 and unscrew valve assembly intact from diaphragm assembly 12b unscrews from 11h 3 Unscrew orifice 18 with socket wrench 1 1 ...

Page 5: ...el trim Buna N 1 Double Seat Valve Assembly 091 16 515 11 brass trim Red Polyurethane 1 Double Seat Valve Assembly stainless steel trim 091 16 515 13 Red Polyurethane 11 16 Double Seat Valve Assembly 091 16 515 00 brass trim Buna N 12 11 16 Double Seat Valve Assembly 091 16 515 02 stainless steel trim Buna N 11 16 Double Seat Valve Assembly 091 16 515 10 brass trim Red Polyurethane 11 16 Double Se...

Page 6: ...s Condensed Parts List All Models Illustration Part Number Description Number 12g Set Screw slotted headless cup 907694 pt 12 24 x 1 4 lg Female Valve Stem brass for 091 16 016 00 12h double seat assembly Female Valve Stem stainless for 091 16 016 03 double seat assembly Valve Guide brass for 091 16 012 00 12j double seat assembly Valve Guide stainless for 091 16 012 02 double seat assembly 12m Ro...

Page 7: ...9 03 11g Stat O Seal 3 8 904985 11h Diaphragm Stud stainless steel 091 16 058 02 Minimum Recommended Spare Parts Maximum Emergency Pressures For complete Maximum Emergency Pressure information for Model 461 Regulators refer to bulletin RDS 1498 Regulator Pressure Ratings If the maximum outlet pressure is exceeded the regulator must be removed from service and carefully inspected Damaged or otherwi...

Page 8: ... writing of any purported defect or nonconformance with thirty days after Buyer discovers or should have reasonably discovered such purported defect or nonconformance and d shall only extend to Buyer and not to any subsequent buyers or users of the Goods Buyer shall provide Seller access to the Goods as to which Buyer claims a purported defect or nonconformance upon request by Seller buyer shall a...

Reviews: